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Merge pull request #423 from emersion/refactor-rootston-keyboard 

Refactor rootston keyboard
This commit is contained in:
Tony Crisci 2017-11-16 13:47:06 -05:00 committed by GitHub
parent 900d9dc05e a52ca9482a
commit bfcbe99cd5
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 138 additions and 75 deletions
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3
include/rootston/keyboard.h
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@ -16,7 +16,8 @@ struct roots_keyboard {
struct wl_listener keyboard_key;
struct wl_listener keyboard_modifiers;
xkb_keysym_t pressed_keysyms[ROOTS_KEYBOARD_PRESSED_KEYSYMS_CAP];
xkb_keysym_t pressed_keysyms_translated[ROOTS_KEYBOARD_PRESSED_KEYSYMS_CAP];
xkb_keysym_t pressed_keysyms_raw[ROOTS_KEYBOARD_PRESSED_KEYSYMS_CAP];
};
struct roots_keyboard *roots_keyboard_create(struct wlr_input_device *device,

208
rootston/keyboard.c
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@ -13,16 +13,76 @@
#include "rootston/seat.h"
#include "rootston/keyboard.h"
static ssize_t keyboard_pressed_keysym_index(struct roots_keyboard *keyboard,
static ssize_t pressed_keysyms_index(xkb_keysym_t *pressed_keysyms,
xkb_keysym_t keysym) {
for (size_t i = 0; i < ROOTS_KEYBOARD_PRESSED_KEYSYMS_CAP; i++) {
if (keyboard->pressed_keysyms[i] == keysym) {
for (size_t i = 0; i < ROOTS_KEYBOARD_PRESSED_KEYSYMS_CAP; ++i) {
if (pressed_keysyms[i] == keysym) {
return i;
}
}
return -1;
}
static size_t pressed_keysyms_length(xkb_keysym_t *pressed_keysyms) {
size_t n = 0;
for (size_t i = 0; i < ROOTS_KEYBOARD_PRESSED_KEYSYMS_CAP; ++i) {
if (pressed_keysyms[i] != XKB_KEY_NoSymbol) {
++n;
}
}
return n;
}
static void pressed_keysyms_add(xkb_keysym_t *pressed_keysyms,
xkb_keysym_t keysym) {
ssize_t i = pressed_keysyms_index(pressed_keysyms, keysym);
if (i < 0) {
i = pressed_keysyms_index(pressed_keysyms, XKB_KEY_NoSymbol);
if (i >= 0) {
pressed_keysyms[i] = keysym;
}
}
}
static void pressed_keysyms_remove(xkb_keysym_t *pressed_keysyms,
xkb_keysym_t keysym) {
ssize_t i = pressed_keysyms_index(pressed_keysyms, keysym);
if (i >= 0) {
pressed_keysyms[i] = XKB_KEY_NoSymbol;
}
}
static bool keysym_is_modifier(xkb_keysym_t keysym) {
switch (keysym) {
case XKB_KEY_Shift_L: case XKB_KEY_Shift_R:
case XKB_KEY_Control_L: case XKB_KEY_Control_R:
case XKB_KEY_Caps_Lock:
case XKB_KEY_Shift_Lock:
case XKB_KEY_Meta_L: case XKB_KEY_Meta_R:
case XKB_KEY_Alt_L: case XKB_KEY_Alt_R:
case XKB_KEY_Super_L: case XKB_KEY_Super_R:
case XKB_KEY_Hyper_L: case XKB_KEY_Hyper_R:
return true;
default:
return false;
}
}
static void pressed_keysyms_update(xkb_keysym_t *pressed_keysyms,
const xkb_keysym_t *keysyms, size_t keysyms_len,
enum wlr_key_state state) {
for (size_t i = 0; i < keysyms_len; ++i) {
if (keysym_is_modifier(keysyms[i])) {
continue;
}
if (state == WLR_KEY_PRESSED) {
pressed_keysyms_add(pressed_keysyms, keysyms[i]);
} else { // WLR_KEY_RELEASED
pressed_keysyms_remove(pressed_keysyms, keysyms[i]);
}
}
}
static const char *exec_prefix = "exec ";
static void keyboard_binding_execute(struct roots_keyboard *keyboard,
@ -56,21 +116,14 @@ static void keyboard_binding_execute(struct roots_keyboard *keyboard,
}
/**
* Process a keypress from the keyboard.
* Execute a built-in, hardcoded compositor binding. These are triggered from a
* single keysym.
*
* Returns true if the keysym was handled by a binding and false if the event
* should be propagated to clients.
*/
static bool keyboard_keysym_press(struct roots_keyboard *keyboard,
static bool keyboard_execute_compositor_binding(struct roots_keyboard *keyboard,
xkb_keysym_t keysym) {
ssize_t i = keyboard_pressed_keysym_index(keyboard, keysym);
if (i < 0) {
i = keyboard_pressed_keysym_index(keyboard, XKB_KEY_NoSymbol);
if (i >= 0) {
keyboard->pressed_keysyms[i] = keysym;
}
}
if (keysym >= XKB_KEY_XF86Switch_VT_1 &&
keysym <= XKB_KEY_XF86Switch_VT_12) {
struct roots_server *server = keyboard->input->server;
@ -90,17 +143,37 @@ static bool keyboard_keysym_press(struct roots_keyboard *keyboard,
wlr_seat_keyboard_end_grab(keyboard->seat->seat);
}
uint32_t modifiers = wlr_keyboard_get_modifiers(keyboard->device->keyboard);
return false;
}
/**
* Execute keyboard bindings. These include compositor bindings and user-defined
* bindings.
*
* Returns true if the keysym was handled by a binding and false if the event
* should be propagated to clients.
*/
static bool keyboard_execute_binding(struct roots_keyboard *keyboard,
xkb_keysym_t *pressed_keysyms, uint32_t modifiers,
const xkb_keysym_t *keysyms, size_t keysyms_len) {
for (size_t i = 0; i < keysyms_len; ++i) {
if (keyboard_execute_compositor_binding(keyboard, keysyms[i])) {
return true;
}
}
// User-defined bindings
size_t n = pressed_keysyms_length(pressed_keysyms);
struct wl_list *bindings = &keyboard->input->server->config->bindings;
struct roots_binding_config *bc;
wl_list_for_each(bc, bindings, link) {
if (modifiers ^ bc->modifiers) {
if (modifiers ^ bc->modifiers || n != bc->keysyms_len) {
continue;
}
bool ok = true;
for (size_t i = 0; i < bc->keysyms_len; i++) {
ssize_t j = keyboard_pressed_keysym_index(keyboard, bc->keysyms[i]);
ssize_t j = pressed_keysyms_index(pressed_keysyms, bc->keysyms[i]);
if (j < 0) {
ok = false;
break;
@ -116,86 +189,75 @@ static bool keyboard_keysym_press(struct roots_keyboard *keyboard,
return false;
}
static void keyboard_keysym_release(struct roots_keyboard *keyboard,
xkb_keysym_t keysym) {
ssize_t i = keyboard_pressed_keysym_index(keyboard, keysym);
if (i >= 0) {
keyboard->pressed_keysyms[i] = XKB_KEY_NoSymbol;
}
}
/*
* Process keypresses from the keyboard as xkb sees them.
* Get keysyms and modifiers from the keyboard as xkb sees them.
*
* This uses the xkb keysyms translation based on pressed modifiers and clears
* the consumed modifiers from the list of modifiers passed to keybind
* detection.
*
* (On US layout) this will trigger: [Alt]+[at]
* On US layout, pressing Alt+Shift+2 will trigger Alt+@.
*/
static bool keyboard_keysyms_xkb(struct roots_keyboard *keyboard,
uint32_t keycode, enum wlr_key_state state) {
uint32_t modifiers = wlr_keyboard_get_modifiers(keyboard->device->keyboard);
const xkb_keysym_t *syms;
int syms_len = xkb_state_key_get_syms(keyboard->device->keyboard->xkb_state,
keycode, &syms);
uint32_t consumed = xkb_state_key_get_consumed_mods2(
static size_t keyboard_keysyms_translated(struct roots_keyboard *keyboard,
xkb_keycode_t keycode, const xkb_keysym_t **keysyms,
uint32_t *modifiers) {
*modifiers = wlr_keyboard_get_modifiers(keyboard->device->keyboard);
xkb_mod_mask_t consumed = xkb_state_key_get_consumed_mods2(
keyboard->device->keyboard->xkb_state, keycode, XKB_CONSUMED_MODE_XKB);
*modifiers = *modifiers & ~consumed;
// TODO: actually use this value
modifiers = modifiers & ~consumed;
bool handled = false;
for (int i = 0; i < syms_len; i++) {
if (state) {
bool keysym_handled =
keyboard_keysym_press(keyboard, syms[i]);
handled = handled || keysym_handled;
} else { // WLR_KEY_RELEASED
keyboard_keysym_release(keyboard, syms[i]);
}
}
return handled;
return xkb_state_key_get_syms(keyboard->device->keyboard->xkb_state,
keycode, keysyms);
}
/*
* Process keypresses from the keyboard as if modifiers didn't change keysyms.
* Get keysyms and modifiers from the keyboard as if modifiers didn't change
* keysyms.
*
* This avoids the xkb keysym translation based on modifiers considered pressed
* in the state and uses the list of modifiers saved on the rootston side.
* in the state.
*
* This will trigger the keybind: [Alt]+[Shift]+2
* This will trigger keybinds such as Alt+Shift+2.
*/
static bool keyboard_keysyms_simple(struct roots_keyboard *keyboard,
uint32_t keycode, enum wlr_key_state state) {
const xkb_keysym_t *syms;
static size_t keyboard_keysyms_raw(struct roots_keyboard *keyboard,
xkb_keycode_t keycode, const xkb_keysym_t **keysyms,
uint32_t *modifiers) {
*modifiers = wlr_keyboard_get_modifiers(keyboard->device->keyboard);
xkb_layout_index_t layout_index = xkb_state_key_get_layout(
keyboard->device->keyboard->xkb_state, keycode);
int syms_len = xkb_keymap_key_get_syms_by_level(
keyboard->device->keyboard->keymap, keycode, layout_index, 0, &syms);
bool handled = false;
for (int i = 0; i < syms_len; i++) {
if (state) {
bool keysym_handled = keyboard_keysym_press(keyboard, syms[i]);
handled = handled || keysym_handled;
} else { // WLR_KEY_RELEASED
keyboard_keysym_release(keyboard, syms[i]);
}
}
return handled;
return xkb_keymap_key_get_syms_by_level(keyboard->device->keyboard->keymap,
keycode, layout_index, 0, keysyms);
}
void roots_keyboard_handle_key(struct roots_keyboard *keyboard,
struct wlr_event_keyboard_key *event) {
uint32_t keycode = event->keycode + 8;
xkb_keycode_t keycode = event->keycode + 8;
bool handled = keyboard_keysyms_xkb(keyboard, keycode, event->state);
bool handled = false;
uint32_t modifiers;
const xkb_keysym_t *keysyms;
size_t keysyms_len;
if (!handled) {
bool key_handled = keyboard_keysyms_simple(keyboard, keycode,
event->state);
handled = handled || key_handled;
// Handle translated keysyms
keysyms_len = keyboard_keysyms_translated(keyboard, keycode, &keysyms,
&modifiers);
pressed_keysyms_update(keyboard->pressed_keysyms_translated, keysyms,
keysyms_len, event->state);
if (event->state == WLR_KEY_PRESSED) {
handled = keyboard_execute_binding(keyboard,
keyboard->pressed_keysyms_translated, modifiers, keysyms,
keysyms_len);
}
// Handle raw keysyms
keysyms_len = keyboard_keysyms_raw(keyboard, keycode, &keysyms, &modifiers);
pressed_keysyms_update(keyboard->pressed_keysyms_raw, keysyms, keysyms_len,
event->state);
if (event->state == WLR_KEY_PRESSED && !handled) {
handled = keyboard_execute_binding(keyboard,
keyboard->pressed_keysyms_raw, modifiers, keysyms, keysyms_len);
}
if (!handled) {

2
rootston/rootston.ini.example
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@ -40,6 +40,6 @@ meta-key = Logo
# - "close" to close the current view
# - "next_window" to cycle through windows
[bindings]
Logo+Shift+E = exit
Logo+Shift+e = exit
Logo+q = close
Alt+Tab = next_window